♪ whatever your business challenge, dell has the technology and services to help you solve it. >> bret: welcome back. we'll have more from colorado shortly. but first, we go about 1,000 miles southwest of here to southern california. correspondent william la jeunesse has obtained new information that the obama administration tried to keep secret regarding operation "fast and furious." it includes just who has paid the price with the now infamous gun tracking program. >> a mother cries for her son, one of 18 killed in drug rehab center in juarez, mexico. months later, hit men massacre 16 at teenager's birthday party. weapons used in both attacks traced to operation fast and furious. >> they are waiting for an answer. they want to know what happened. and why they define stop these guns from leighing the united states and enending up. >> spanish language network univision and fox news obtained list of 100,000 weapons recovered in mexico. compared those serial numbers with the 2000 guns sold in fast and furious. nearly two dozen matched. connecting an untold number of injuries and fataliti